Grand Archaeology . Grand Canyon National Park: The Grand Archaeology project excavated sites that were being eroded by active gullies or arroyos. At Furnace Flats, archaeologists excavated three large rooms that were bisected by gullies and where stabilization measures, such as the construction of brush check dams, were not successful. Ted Neff MNA photo. Sept 2007 Session 1

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Photo credit: © Natural History Archive / Alamy / Afripics
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Keywords: america, american, archive, arizona, canyon, coconino, conservation, country, county, grand, historic, history, land, lands, mohave, national, natural, nature, np, park, parks, preserve, public, service, usa, widlife, wilderness